The average clerk salary at Simi Valley was $39,491 , which is 35 percent lower than the average salary for this job in California, but 2 percent higher than the national average for this job . Clerk salaries at Simi Valley typically range from $34,663 to $51,059 (25th to 75th percentile). The highest reported clerk salary was $54,534. There are 9 employees at Simi Valley with the job title clerk.